1, This is a simple and practical water sensor relay module, relay output switch SPDT (Single Pole Double Throw). If the 2 sensor wires P1 and P2 of the module come into contact with water, the built-in relay switch action, C to NO connected and C to NC disconnect, otherwise the relay switch will release, C to NO disconnect and C to NC connected.
2, The module must a power supply DC 10 ~ 15V to V+ / GND. Operating current 3, Relay output switch SPDT (Single Pole Double Throw). Maximum switch voltage AC 277V / DC 30V. Maximum load current 10 Amp.
4, Approved cable length towards the water sensors P1 and P2: max. 10m / 32.8ft with normal cable, max. 100m / 328ft with shielded cable, if the shielding braid is connected with the negative pole of the distribution voltage. The two sensor heads should be placed as close as possible, but not short-circuited.
5, Compact plastic case and wires connects for easy mount. Two screw mounting holes are convenient for you to fix it on the wall or wooden board. Of course, you can also choose not to lock the screw.